**increase**or

**decrease**of the ratio?

"In 2010, the ratio was 1 out of 100. In 2013, the ratio became 1 out of 200."

- Thread starter Alexander2
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"In 2010, the ratio was 1 out of 100. In 2013, the ratio became 1 out of 200."

A decrease from 1% to 0.5%. But that's a mathematical question, not a language question.

"In 2010, the ratio was 1 bad apple"In 2010, the ratio was 1 out of 100. In 2013, the ratio became 1 out of 200."

"1 out of 100" is not a ratio, but a proportion or a fraction, and these can increase and decrease in the English language as they can in mathematics.increaseordecreaseof the ratio?

"In 2010, the ratio was 1 out of 100. In 2013, the ratio became 1 out of 200."

If you wanted to express 1 out of 100 as a ratio, it would be 1:99 or "one to ninety-nine".

Ratios can also increase and decrease in the English language, even though this makes little sense mathematically. The first-named term is always the most important, and is the one you use (as a fraction of the whole) to determine whether "increase" or "decrease" applies:

The ratio of boys to girls increased from three to five in 2010 to two to three in 2013.

AlternativelyThe ratio of girls to boys decreased from five to three in 2010 to three to two in 2013.

Both these sentences say the same thing, mathematically."In 2010, the proportion was 1 out of 100. In 2013, the proportion was reduced to 1 out of 200."

Sorry, I did not mean to be overly critical; you will find that many English speakers use "ratio" in exactly the way you did, and no one really worries about it. Your original sentence was grammatically correct, understandable and unambiguous. And yes, you can use "decrease".I did not know that the word “ratio” should not be used in instances where one quantity is said to be “out of” another quantity.

While you might use "was reduced", this is the passive voice, which might not be what you mean. Unless you specifically want to state that an unnamed agent reduced the proportion, it would be more common to say "the proportion reduced". If you told us what the sentence described, we could say whether the active or passive voice is more appropriate."In 2010, the proportion was 1 out of 100. In 2013, the proportion was reduced to 1 out of 200."

The text which I had been thinking about was the following. I had written it in another place and wanted to check whether it is correct.

“With regard to violent crimes, the safety of the population can be measured by the proportion or percentage of people affected by crimes. For example, if a certain city 200 years ago had 10,000 inhabitants but now has 1,000,000, and if 200 years ago 100 people died from violent crimes in that city each year, whereas 1,000 people die from violent crimes in the same city 200 years later—this means that the city is safer to live in 200 years later. Even though the

(I have replaced the word “ratio” with “proportion” according to what has been said on this thread.) Are there any other things which need to be changed in the text?